As far as I can tell, there is no statistical way to quantify a manager’s affect on wins and losses. Some say that managers have no bearing, that only performance by the players leads to victories and losses. Others lay of lot of credit to the guy that makes out the lineup card, makes pitching changes and is somewhat responsible for the way the team is run. It seems that most managers that have managed a long time have those value decisions made for them. But what do you go by? Many times, a manager’s overall record over time is considered. But again, a guy could get four jobs managing really bad teams. Does that make him a lousy manager? Joe Girardi has an overall managerial record of .570 and is .591 with the Yankees. That’s impressive. But how much credit can you give him?
I have often wondered if the Pythagorean won-loss record is any indication of a manager’s ability.… Click here to read the rest